Ozonator.



L. GOLDBERG OZONATOR.

APPLICATION FILED AUG-'51 19H.

Patented Apr.2(3,1915.

LOUIS GOLDBERG, OF INDIANAPOLIS, INDIANA.

OZONATOR.

Specification of Letters Patent. Patented A 1915 Application filed August 5, 1914. Serial No. 855,142.

To (115 whom it may concern Be it known that I, LoUIs GOLDBERG, a citizen of the United States of America, and a resident of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Ozonators, of which the following is a specification.

This invention relates to apparatus for generating ozone.

The main objects of the invention are to produce a highly efiicient apparatus of this nature at low cost; to provide a pair of cylindrical electrodes, one on the inside and the other on the outside of a single dielectric tube, whereby equal spacing between the electrodes is certain to result upon assembhng the device without requ1r1ng any special adjustments of the electrodes; to provide an electrode formed of resilient sheet the apparatus.

An illustrative embodiment of this invention is shown-in the accompanying drawings, in which:

Figure 1 is a front elevation of the ozone generator'withijs casing andv inlet and outlet conduits omitted. Fig. 2 is a plan view of the generator. Fig. 3 is a vertical section taken on the line AA ofFig. 2. Fig. 4 is a sectional detail showing how the inner electrode is spaced from the dielectric tube.

Devices of this general class are much in use at the present time, ozone being employed in many ways in the sciences and arts because of its power to produce rapid oxidation and because of its antiseptic and germicidal properties. ,These devices generally involve a pair of electrodes separated by a dielectric, such as glass, theelectrodes 'beingin circuit with a source of varying or alternating electric current of high potential or high frequency. The dielectric be tween .the electrodes has the effect of finely dividing the. discharge between the elec-- trodes, so that there is a greater brush effect and the production of ozone is greater with the dielectric than without the dielectric. Also the dielectric tends to prevent destruc tive sparking between the electrodes. F urther to prevent sparking and an unequal distribution of the brush discharge, it is necessary that the pair of electrodes are equally spaced from each other throughout their surfaces.

In the present case this alinement of the electrodes is effected by employing an'electrode of resilient material, which may be rolled to the form of a split cylinder and allowed to expand into contact with the dielectric tube which separates it from its companion electrode. With this construction of electrode no special care is required in assembling it with the remaining parts of the apparatus. electrode is also in contact with the air or The said expanded inner oxygen treated by the apparatus, and is therefore preferably made of aluminum because of the non-oxidizing nature of aluminum. The said inner electrode is also perforated in such manner as to provide ridges or burs for separating it from the dielectric tube, and thereby admitting air to a very powerful part of the field of force be-' tween the two electrodes. 7

Referring to the drawings, a dielectric tube 1 is fitted at its ends into seats 2 in insulating blocks 8 and 4. .These blocks are respectively provided with an outlet 5 for the gas and an inlet 6 for the air or oxygen to be acted upon by the electric discharge between the electrodes, this discharge, as is known, converting more or less of the oxygen into ozone.

The dielectric tube 1 is properly retained in place and the blocks 3 and 4: spaced from each other by tie rods 7 and 7.1, these tie rods being preferably threaded to receive nuts 8. The tie rods also serve as binding posts for conductors 9 and 10. The inner electrode 11 is connected by a metallic strip 12 to the tie rod 7, while the outer electrode 13 is connected to the tie rod 7.1 by the Wire let of which the said electrode 13 is composed.

The outer electrode consists of a coil of wire, preferably in a single .layer, wound around the dielectric tube 1 and preferably coated with a suitable varnish. For convenience both ends of the wire 14; are Preferably secured to the rod 7.1, as shown in Fig. 1. To prevent sparking between the electrode 13 and rod 7, the latter is surrounded by a tube 16 of insulating material.

The inner electrode 11 is formed out of sheet metal, preferably aluminum, punched in the manner clearly indicated in Fig. 4, wher by burs 15 extendoutwardly from one side of the sheet around the holes therein. The conducting strip 12, which may also be of aluminum, is riveted to one edge of the sheet metal electrode, and the electrode is then rolledinto cylindrical form and inserted Within the dielectric tube 1. It is then permittedto expand into contact with the inner side of the tube 1., so that the burs 15 engage said tube as shown in Fig. 4. The electrode 11 therefore adjusts itself perfectly with respect to the space between it and the electrode 13 while there is still anair space between the tube 1 and the electrode 11 due to the ridges or burs 15.

In the operation of the device, the air or oxygen,which is admitted or forced through the opening 6 in block 4, comes into contact.

still provides minute air spaces between the electrode and tube. v

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construct-ion shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. In a device of the class described, the combination of a pair of blocks, a dielectric tube having its ends in contact with said blocks, air passages in said blocks communicating with said tube, an electrodeinside and an electrode outside of said tube, and tie rods connecting said blocks, said tie rods serving as binding posts for said electrodes.

2. In a device of the class described, the combination of a pair of blocks, a dielectric tube having its ends in contact with said blocks, air passages in said blocks communicating with said tube, an electrode inside and an electrode outside of said tube, tie rods connecting said blocks, said tie rods serving as binding posts for said electrodes, said inside electrode being formed of perforated sheet metal, and a metallic strip connecting said inside electrode with one of said tie rods.

Signed at Toledo this 25th day of July 1914.

LOUIS GOLDBERG.

Vitnesses:

WILLARD A. SHERER, W. A. DAL'roN. 

